A high-performance self-powered UV photodetector based on SnO2 mesoporous spheres @ TiO2 View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2015-10-28

AUTHORS

Yuewu Huang, Qingjiang Yu, Jinzhong Wang, Xiaochao Li, Yuan Yan, Shiyong Gao, Feifei Shi, Dongbo Wang, Cuiling Yu

ABSTRACT

A novel self-powered UV photodetector (UVPD) based on the photoelectrochemical cell (PECC) has been constructed using the TiO2 coated SnO2 mesoporous spheres (SnO2-MS@TiO2). This self-powered UVPD displays a higher photocurrent density compared to the UVPD with the pure SnO2-MS. By means of external quantum efficiency (EQE), UV-vis absorption, and electrochemical impedance measurements, we scrutinize the intrinsic role of the TiO2 coating layer on the photocurrent enhancement. Under UV irradiation, this UVPD exhibits a high on/off ratio of 11519, a fast rise time of 0.007 s and decay time of 0.006 s, together with the excellent visible-blind characteristic and linear optical signal response. The self-powered photodetector is a promising candidate for application in high-sensitivity and high-speed UVPDs. More... »

PAGES

1059-1065

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s13391-015-5111-0

DOI

http://dx.doi.org/10.1007/s13391-015-5111-0

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1043239700


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